AFS 105 Delco Heated Oxygen Sensor, Whats the Difference?
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Joined: Mar 2000
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From: Red Bud, Illinois
Car: 1989 IROC-Z
Engine: 383
Transmission: Pro-Built 700R4 2400 ACT Stall
Axle/Gears: 2.77 Borg Warner 9-Bolt
AFS 105 Delco Heated Oxygen Sensor, Whats the Difference?
I came across a new AC Delco AFS105 oxygen sensor for free. I was just wondering what the difference is between it and the AFS74. I've read a couple of posts stateing that the AFS74 is tuned to the GM PID. I did a search but found no information. The biggest thing i could find is that one is 3 wire and the other is 4 wire. Are there any other differences? Thanks for any help.
Brandon
Brandon
Joined: Apr 2004
Posts: 3,180
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From: Browns Town
Car: 86 Monte SS (730,$8D,G3,AP,4K,S_V4)
Engine: 406 Hyd Roller 236/242
Transmission: 700R4 HomeBrew, 2.4K stall
Axle/Gears: 3:73 Posi, 7.5 Soon to break
4th wire might be a separate sensor ground so you don't have to rely on the ground path throught the exhaust for readings.
Not 100% but a good guess.
Not 100% but a good guess.
Thread Starter
Senior Member
Joined: Mar 2000
Posts: 669
Likes: 0
From: Red Bud, Illinois
Car: 1989 IROC-Z
Engine: 383
Transmission: Pro-Built 700R4 2400 ACT Stall
Axle/Gears: 2.77 Borg Warner 9-Bolt
So, it's just an extra ground. That's what i was wondering. Thanks.
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